package com.back_end.StringOperate.Test;
/*
* substring Test
*
* */
public class Test1 {


    public static void main(String[] args) {
        String ss = "123456789";


        // 记头不计尾[)
        System.out.println("`(123456789)`的substring(0,1) = " + ss.substring(0,1));
        System.out.println("`(123456789)`的substring(0,2) = " + ss.substring(0,2));

    }
}
